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Monday, October 26, 2009
10:00 AM - 11:00 AM
CNLS Conference Room (TA-3, Bldg 1690)


Numerical Modeling of Multiphase and Multimaterial Flow Problems

Shaolin Mao
Advanced Dynamics Inc, Lexington, KY

Three parts will be included in this presentation. The first part focuses on gas-liquid and gas-solid multi-phase flow using large-eddy simulation (LES), innovative particle-in-cell method (PIC) methods, and Lagrangian stochastic approach (Markov model). A direct application is the modeling of coughing and sneezing and influenza virus migration in work place, a NIH funded NIOSH collaborative project. New solver has been developed based on this work for an in-house CFD tool. A related topic, material point method (MPM), will also be involved which is the second part of this talk. The MPM combined with adaptive mesh refinement (AMR) technique is applied to investigate complicated fluid-structure interaction (FSI) such as aircraft wing flutter and other aeroelastic problems. MPM avoids explicit discretization of convection terms in momentum eqautions and there is no mesh distortion problem needs to be handling with in a case on large deformation. Traditionally, finite volume, multi-material compressible flow approach is applied for FSI simulation in which finite volume method is for fluid flow and MPM for solid materials. This talk will report some latest effort on multi-material simulation by using MPM for both fluid and solid materials. The third part is about my work on large-scale industrial applications by using CFD thermal analysis toos in order to validate and verify Tier 4 (a) and (b) disel engine and heavy-duty truck system.

Host: Mikhail Shashkov